Saab SONETT III Service Manual page 88

Reassembly
F it the seal with its flat side properly located on the valve
head. Then put on the elastic washer with its cupped side
facing the lower side of the valve head, retaining it in po-
sition by means of the valve-spacer, the legs of which are
turned towards the valve seal. Refit the piston return spring,
centering it on the washer, insert the spring retainer in the
spring and press down until the valve spindle bottoms
through the key-shaped hole. At the same time, check
that the spindle is correctly located in the middle of the
retainer. Check that the spring is still centered on the
spacer. F it a new seal on the piston with its flat side
turned towards the seat of the piston.
Insert the small end of the piston in the retainer until the
retainer spring leaf engages the piston tongue. Press the
retainer leaf fully home.
Lubricate the piston thoroughly with Wakefield/Girling
Rubber Grease 3 and refit the assembly in the cylinder
bore, valve end first, at the same time easing the piston
seal lips slowly into the bore.
Remount the push-rod in the cylinder, followed by the
lock-ring, placing this in the milled groove in the cylinder
body. Replace the rubber dust cap or, if it is damaged,
fit a new one.
Slave cylinder
General
The slave cylinder is secured to the clutch housing by
means of a screw. The inner assembly comprises the push-
rod, lock-ring, piston and piston spring. The open end of
the cylinder is protected by a rubber dust cap and a bleed
nipple is located in the bleeder opening.
Removal
1. Disconnect the hose and pump out the fluid into a
clean vessel.
2. Back off the retaining screw(s) for the cylinder.
3. Separate the cylinder from the push-rod and clutch
housing.
Installation
1. Locate the slave cylinder on the clutch housing and
pass the push-rod through the hole in the rubber dust
cap.
2. Refit and tighten the retaining screw(s).
3. Reconnect the hose.
4. Bleed the system.
S 611
89
5720 ,
SLAVE CYLINDER, D ISASSE MB LE D
1. Push-rod
6. Spring
2. Rubber dust cap
7. Cylinder body
3. Lock ring
8. Bleeder screw
4. Seal
9. Rose
5. Piston
10. Distance piece
Disassembly
Ease the dust cap back and remove the lock-ring, using
long-nosed pliers. The piston with seal attached can now
be removed, followed by the spring. Examine the cyl-
inder bore and if it is not scored or distorted, and feels
smooth to the touch, a new seal can be fitted. If, on the
other hand, the slightest doubt is entertained about the
condition of the bore, a new cylinder should be fitted.
June 1970
SAAB
412-4